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PyPI · #17 most downloaded on PyPI
Low-level, data-driven core of boto 3.
Last release 4 days ago
02 Oct 2026
Ships on a steady schedule
a new release about every 8 days
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
14 years old
2530 releases · first in 2012
api-change:cloudhsmv2: Update cloudhsmv2 client to latest version
api-change:cloudhsmv2: Update cloudhsmv2 client to latest version
api-change:discovery: Update discovery client to latest version
api-change:iot: Update iot client to latest version
api-change:redshift: Update redshift client to latest version
api-change:pinpoint: Update pinpoint client to latest version
api-change:pinpoint: Update pinpoint client to latest version
api-change:ecs: Update ecs client to latest version
api-change:rds: Update rds client to latest version
api-change:mgh: Update mgh client to latest version
One column per quarter.
api-change:medialive: Update medialive client to latest version
api-change:medialive: Update medialive client to latest version
api-change:ecs: Update ecs client to latest version
api-change:ecs: Update ecs client to latest version
api-change:ssm: Update ssm client to latest version
api-change:ssm: Update ssm client to latest version
api-change:servicecatalog: Update servicecatalog client to latest version
api-change:events: Update events client to latest version
api-change:storagegateway: Update storagegateway client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:application-autoscaling: Update application-autoscaling client to latest version
api-change:application-autoscaling: Update application-autoscaling client to latest version
api-change:ecr: Update ecr client to latest version
api-change:ecr: Update ecr client to latest version
enhancement:Stubber: Added the ability to add items to response metadata with the stubber.
enhancement:Stubber: Added the ability to add items to response metadata with the stubber.
api-change:sts: Update sts client to latest version
api-change:route53: Update route53 client to latest version
feature:s3: Default to virtual hosted addressing regardless of signature version (boto/botocore`#1387 <https://github.com/boto/botocore/issues/1387>`__)
api-change:appstream: Update appstream client to latest version
api-change:appstream: Update appstream client to latest version
api-change:elbv2: Update elbv2 client to latest version
api-change:elbv2: Update elbv2 client to latest version
api-change:ce: Update ce client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:serverlessrepo: Update serverlessrepo client to latest version
api-change:codecommit: Update codecommit client to latest version
api-change:autoscaling: Update autoscaling client to latest version
api-change:autoscaling: Update autoscaling client to latest version
api-change:waf-regional: Update waf-regional client to latest version
api-change:waf: Update waf client to latest version
api-change:config: Update config client to latest version
api-change:config: Update config client to latest version
api-change:rds: Update rds client to latest version
api-change:rds: Update rds client to latest version
api-change:mediaconvert: Update mediaconvert client to latest version
api-change:mediaconvert: Update mediaconvert client to latest version
api-change:gamelift: Update gamelift client to latest version
api-change:appsync: Update appsync client to latest version
api-change:appsync: Update appsync client to latest version
api-change:lex-models: Update lex-models client to latest version
api-change:glacier: Update glacier client to latest version
api-change:glacier: Update glacier client to latest version
api-change:route53: Update route53 client to latest version
api-change:guardduty: Update guardduty client to latest version
api-change:guardduty: Update guardduty client to latest version
api-change:cognito-idp: Update cognito-idp client to latest version
api-change:rds: Update rds client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:kms: Update kms client to latest version
api-change:lex-runtime: Update lex-runtime client to latest version
api-change:lex-runtime: Update lex-runtime client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:lex-models: Update lex-models client to latest version
api-change:ds: Update ds client to latest version
api-change:ds: Update ds client to latest version
api-change:appstream: Update appstream client to latest version
api-change:medialive: Update medialive client to latest version
api-change:budgets: Update budgets client to latest version
api-change:gamelift: Update gamelift client to latest version
api-change:dynamodb: Update dynamodb client to latest version
api-change:dms: Update dms client to latest version
api-change:mediastore: Update mediastore client to latest version
api-change:servicediscovery: Update servicediscovery client to latest version
api-change:servicediscovery: Update servicediscovery client to latest version
api-change:servicecatalog: Update servicecatalog client to latest version
api-change:ssm: Update ssm client to latest version
api-change:glue: Update glue client to latest version
api-change:cloud9: Update cloud9 client to latest version
api-change:cloud9: Update cloud9 client to latest version
api-change:acm: Update acm client to latest version
api-change:kinesis: Update kinesis client to latest version
api-change:opsworks: Update opsworks client to latest version
api-change:mturk: Update mturk client to latest version
api-change:mturk: Update mturk client to latest version
api-change:medialive: Update medialive client to latest version
api-change:devicefarm: Update devicefarm client to latest version
api-change:lambda: Update lambda client to latest version
api-change:lambda: Update lambda client to latest version
api-change:codebuild: Update codebuild client to latest version
api-change:alexaforbusiness: Update alexaforbusiness client to latest version
bugfix:Presign: Fix issue where some events were not fired during the presigning of a request thus not including a variety of customizations (#1340)
enhancement:Credentials: Improved error message when the source profile for an assume role is misconfigured. Fixes aws/aws-cli`#2763 <https://github.com/aws/aws-cli/issues/2763>`__
api-change:guardduty: Update guardduty client to latest version
enhancment:Paginator: Added paginators for a number of services where the result key is unambiguous.
api-change:budgets: Update budgets client to latest version
api-change:budgets: Update budgets client to latest version
api-change:glue: Update glue client to latest version
api-change:glue: Update glue client to latest version
api-change:transcribe: Update transcribe client to latest version
api-change:sagemaker: Update sagemaker client to latest version
api-change:sagemaker: Update sagemaker client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:autoscaling-plans: Update autoscaling-plans client to latest version
api-change:application-autoscaling: Update application-autoscaling client to latest version
api-change:application-autoscaling: Update application-autoscaling client to latest version
api-change:autoscaling-plans: Update autoscaling-plans client to latest version
api-change:rds: Update rds client to latest version
api-change:lambda: Update lambda client to latest version
api-change:lambda: Update lambda client to latest version
enhancement:cloudformation get_template template body ordering: fixes boto/boto3`#1378 <https://github.com/boto/boto3/issues/1378>`__
api-change:glue: Update glue client to latest version
api-change:glue: Update glue client to latest version
api-change:ssm: Update ssm client to latest version
api-change:ssm: Update ssm client to latest version
api-change:elbv2: Update elbv2 client to latest version
api-change:rds: Update rds client to latest version
api-change:elb: Update elb client to latest version
api-change:kms: Update kms client to latest version
api-change:kms: Update kms client to latest version
api-change:ds: Update ds client to latest version
api-change:ds: Update ds client to latest version
api-change:route53: Update route53 client to latest version
api-change:route53: Update route53 client to latest version
api-change:discovery: Update discovery client to latest version
api-change:codedeploy: Update codedeploy client to latest version
api-change:ssm: Update ssm client to latest version
api-change:ssm: Update ssm client to latest version
api-change:inspector: Update inspector client to latest version
api-change:snowball: Update snowball client to latest version
api-change:rds: Update rds client to latest version
api-change:rds: Update rds client to latest version
api-change:workspaces: Update workspaces client to latest version
api-change:workspaces: Update workspaces client to latest version
api-change:ecs: Update ecs client to latest version
api-change:ecs: Update ecs client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:inspector: Update inspector client to latest version
api-change:sagemaker: Update sagemaker client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:ec2: Update ec2 client to latest version
enhancement:Paginator: Added paginator support for lambda list aliases operation.
api-change:kinesisanalytics: Update kinesisanalytics client to latest version
api-change:codebuild: Update codebuild client to latest version
api-change:iot: Update iot client to latest version
api-change:iot: Update iot client to latest version
api-change:config: Update config client to latest version
api-change:route53: Update route53 client to latest version
api-change:route53: Update route53 client to latest version
api-change:apigateway: Update apigateway client to latest version
api-change:mediastore-data: Update mediastore-data client to latest version
bugfix:presigned-url: Fixes a bug where content-type would be set on presigned requests for query services.
bugfix:presigned-url: Fixes a bug where content-type would be set on presigned requests for query services.
api-change:cloudwatch: Update cloudwatch client to latest version
api-change:appstream: Update appstream client to latest version
api-change:appstream: Update appstream client to latest version
api-change:ses: Update ses client to latest version
api-change:ses: Update ses client to latest version
enhancement:credentials: Moved the JSONFileCache from the CLI into botocore so that it can be used without importing from the cli.
api-change:apigateway: Update apigateway client to latest version
api-change:codedeploy: Update codedeploy client to latest version
api-change:codedeploy: Update codedeploy client to latest version
bugfix:sagemaker-runtime: Renamed the runtime.sagemaker service to sagemaker-runtime to be more consistent with existing services. The old service name is now aliased to sagemaker-runtime to maintain backwards compatibility.
bugfix:Stubber: This change makes the error handling more verbose in the case where a stubbed method has been called, but the Stubber is not expecting a call.
api-change:workmail: Update workmail client to latest version
api-change:sagemaker: Update sagemaker client to latest version
api-change:sagemaker: Update sagemaker client to latest version
api-change:cognito-idp: Update cognito-idp client to latest version
api-change:lex-models: Update lex-models client to latest version
api-change:cloudwatch: Update cloudwatch client to latest version
api-change:cloudwatch: Update cloudwatch client to latest version
api-change:appstream: Update appstream client to latest version
api-change:ecs: Update ecs client to latest version
api-change:ses: Update ses client to latest version
api-change:ses: Update ses client to latest version
api-change:es: Update es client to latest version
api-change:elasticbeanstalk: Update elasticbeanstalk client to latest version
api-change:elasticbeanstalk: Update elasticbeanstalk client to latest version
api-change:clouddirectory: Update clouddirectory client to latest version
api-change:iot: Update iot client to latest version
api-change:iot: Update iot client to latest version
api-change:servicediscovery: Update servicediscovery client to latest version
api-change:servicecatalog: Update servicecatalog client to latest version
api-change:budgets: Update budgets client to latest version
api-change:budgets: Update budgets client to latest version
api-change:ecs: Update ecs client to latest version
api-change:cloud9: Update cloud9 client to latest version
api-change:cloud9: Update cloud9 client to latest version
api-change:lambda: Update lambda client to latest version
api-change:apigateway: Update apigateway client to latest version
api-change:alexaforbusiness: Update alexaforbusiness client to latest version
api-change:serverlessrepo: Update serverlessrepo client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:autoscaling: Update autoscaling client to latest version
api-change:autoscaling: Update autoscaling client to latest version
api-change:waf: Update waf client to latest version
api-change:waf-regional: Update waf-regional client to latest version
api-change:resource-groups: Update resource-groups client to latest version
api-change:ssm: Update ssm client to latest version
api-change:lightsail: Update lightsail client to latest version
api-change:ec2: Update ec2 client to latest version
api-change:kinesis-video-media: Update kinesis-video-media client to latest version
api-change:kinesis-video-media: Update kinesis-video-media client to latest version
api-change:translate: Update translate client to latest version
api-change:sagemaker: Update sagemaker client to latest version
api-change:iot-jobs-data: Update iot-jobs-data client to latest version
api-change:s3: Update s3 client to latest version
api-change:ecs: Update ecs client to latest version
api-change:runtime.sagemaker: Update runtime.sagemaker client to latest version
api-change:kinesisvideo: Update kinesisvideo client to latest version
api-change:comprehend: Update comprehend client to latest version
api-change:greengrass: Update greengrass client to latest version
api-change:glacier: Update glacier client to latest version
api-change:kinesis-video-archived-media: Update kinesis-video-archived-media client to latest version
api-change:dynamodb: Update dynamodb client to latest version
bugfix:Credentials: Fixed a bug causing issues in configuring the process provider on windows when paths were used.
api-change:iot: Update iot client to latest version
api-change:rekognition: Update rekognition client to latest version
api-change:apigateway: Update apigateway client to latest version
api-change:apigateway: Update apigateway client to latest version
api-change:appsync: Update appsync client to latest version
api-change:cognito-idp: Update cognito-idp client to latest version
api-change:guardduty: Update guardduty client to latest version
api-change:batch: Update batch client to latest version
bugfix:rekognition: Fixed a bug causing the rekognition paginator to not return FaceModelVersions.
api-change:lambda: Update lambda client to latest version
api-change:mq: Update mq client to latest version
api-change:codedeploy: Update codedeploy client to latest version
bugfix:Credentials: Fixes an issue where cache keys would be too long to use as file names.
api-change:ec2: Update ec2 client to latest version
api-change:mediapackage: Update mediapackage client to latest version
api-change:mediapackage: Update mediapackage client to latest version
api-change:medialive: Update medialive client to latest version
api-change:mediastore: Update mediastore client to latest version
api-change:mediaconvert: Update mediaconvert client to latest version
api-change:mediastore-data: Update mediastore-data client to latest version
bugfix:Credentials: Fixes a bug causing cached credentials to break in the CLI on Windows. Fixes aws/aws-cli#2978 __
bugfix:Credentials: Fixes a bug causing cached credentials to break in the CLI on Windows. Fixes aws/aws-cli`#2978 <https://github.com/boto/botocore/issues/2978>`__
api-change:acm: Update acm client to latest version
api-change:rekognition: Update rekognition client to latest version
api-change:rekognition: Update rekognition client to latest version
api-change:emr: Update emr client to latest version
api-change:xray: Update xray client to latest version
feature:Credentials: When creating an assume role profile, you can now specify a credential source outside of the config file using the credential_source key.
api-change:shield: Update shield client to latest version
api-change:cloudformation: Update cloudformation client to latest version
feature:Credentials: When creating an assume role profile, you can now specify another assume role profile as the source. This allows for chaining assume role calls.
api-change:codebuild: Update codebuild client to latest version
feature:credentials: Adds support for the process credential provider, allowing users to specify a process to call to get credentials.
api-change:apigateway: Update apigateway client to latest version
api-change:storagegateway: Update storagegateway client to latest version
enhancement:Response: Allow reads of zero on streaming bodies, fixes #1309.
api-change:workdocs: Update workdocs client to latest version
api-change:workdocs: Update workdocs client to latest version
api-change:kinesis: Update kinesis client to latest version
api-change:codecommit: Update codecommit client to latest version
api-change:apigateway: Update apigateway client to latest version
api-change:firehose: Update firehose client to latest version
api-change:ce: Update ce client to latest version
Your coding agent can read these notes before it upgrades. Set up the MCP server →